CN112221712A

CN112221712A - Production system for recovering metal from household garbage incinerator slag

Info

Publication number: CN112221712A
Application number: CN202010990454.3A
Authority: CN
Inventors: 沈从江; 沈小华; 沈隆; 凌根名
Original assignee: Changzhou Congjiang Renewable Resources Utilization Co ltd
Current assignee: Changzhou Congjiang Renewable Resources Utilization Co ltd
Priority date: 2020-09-19
Filing date: 2020-09-19
Publication date: 2021-01-15
Anticipated expiration: 2040-09-19
Also published as: CN112221712B

Abstract

The application relates to a production system for recovering metals from domestic waste incineration slag, which comprises a screening device, the fine material discharge port of the screening device is connected with the iron removal device, and the coarse material discharge port of the screening device is connected with a crushing device, The discharge port of the device is connected with the feed port of the iron removal device, the discharge end of the iron removal device is connected with a copper removal device, the discharge port of the copper removal device is provided with an aluminum removal device, and the screening device is connected with the iron removal device and the screening device. It is connected with the crushing device, the iron removal device and the copper removal device, and the copper removal device and the aluminum removal device through the conveying device, and the screening device adopts the drum screen. In the present application, after the garbage is sorted by the screening device, the slag is processed by the iron removal device, the copper removal device and the aluminum removal device in sequence, which reduces the dependence on water when the metal is separated and recovered, and reduces the pollution to water resources. situation, and improve the effect of environmental performance.

Description

Production system for recovering metal from household garbage incinerator slag

Technical Field

The application relates to the field of garbage recycling, in particular to a production system for recycling metal from household garbage incinerator slag.

Background

At present, by utilizing the household garbage incineration power generation technology, after the municipal household garbage is incinerated at the high temperature of 1000 ℃, slag is generated. The volume of the slag is about 20-30% of that of the primary domestic garbage. At present, the main disposal and utilization modes of slag are direct landfill or low-value building material utilization, including road aggregate, cement/concrete substituted aggregate, landfill covering material and the like. However, considering the content of metal in the slag (about 10-15% of the total mass of the slag) and the yield of the slag, if the metal is not recycled, the metal resource in the slag is lost and wasted; it also limits the high value utilization of slag products in construction or road work and therefore requires recovery of metals from the incinerated slag.

Chinese patent No. CN209109386U discloses a production system for recovering metals from domestic garbage incinerator slag. Comprises a conveying device, a magnetic separator, a crusher, a wet separator, a first jigger, a second jigger, a first shaking table, a second shaking table and a raw material pool. The slag is conveyed through the conveying device, sorted through the magnetic separator, the first jigger, the second jigger, the first shaking table, the second shaking table and the like, and the metal is separated.

In view of the above-mentioned related art, the inventors considered that there was a drawback that a large amount of water was required as a carrier in the separation and recovery of metals by the above-mentioned production system, resulting in water pollution.

Disclosure of Invention

In order to improve the defect that water pollution is caused when metal in the slag is recovered, the application provides a production system for recovering metal from household garbage incinerator slag.

The application provides a production system for retrieving metal from domestic waste incineration slag adopts following technical scheme:

the utility model provides a production system for retrieve metal from domestic waste burns slag, includes the sieving mechanism, the fine material discharge gate of sieving mechanism links to each other with the deironing device, the coarse fodder discharge gate of sieving mechanism links to each other with breaker, breaker's discharge gate links to each other with the feed inlet of deironing device, the discharge end of deironing device is connected with the decoppering device, and the discharge gate of decoppering device is equipped with the device that removes aluminium, all link to each other through conveyor between sieving mechanism and deironing device, sieving mechanism and breaker, deironing device and the device that removes copper, the device that removes copper and the device that removes aluminium, the drum sieve is chooseed for use to the sieving mechanism.

Through adopting above-mentioned technical scheme, the staff takes out the slag from the incinerator after at first transporting to sieving mechanism, carry out the thickness separation to the material through the drum sieve, the coarse fodder part is transported to the breaker, refine the back through the breaker and filter again, the fine material passes through the deironing device, metal and slag with magnetism are separated, then the slag passes through the decoppering device, separate copper metal from the slag, last slag passes through the aluminum removal device, separate aluminium metal from the slag, separate and retrieve magnetic metal respectively, copper metal and aluminium metal, last slag unifies recovery processing, because filter through the drum sieve in the screening process, and not adopt wet-type sorting unit, consequently, the utilization of water resource has been reduced, and then the possibility that causes the pollution to the water resource has been reduced.

Preferably, the slag passes through the first group of screening devices and then passes through a spraying and stirring device, the spraying and stirring device comprises a stirring tank, and a spraying head is arranged on the stirring tank.

Through adopting above-mentioned technical scheme, the slag is at first put into the agitating unit that sprays, sprays the bamboo charcoal deodorant to the slag in the agitator tank through the shower head to thereby make bamboo charcoal deodorant mix with the slag through the agitator tank with the slag stirring, reduce and retrieve the condition that the peculiar smell gived off and influences operational environment air quality in the metal working process in the metal separation.

Preferably, the decoppering device includes the sanding machine and shakes the sieving mechanism, shake the sieving mechanism and include the base, be equipped with the guide frame on the base, through spring interconnect between guide frame and the base, one side of guide frame has set firmly vibrating motor, the one end downward sloping of sanding machine is kept away from to the guide frame, it is provided with the fan to lie in the guide frame bottom on the base, be equipped with duckbilled type air nozzle on the output of fan, duckbilled type air nozzle is on a parallel with the lateral wall setting that sanding machine one end was kept away from to the guide frame, the below that the base is located duckbilled type air nozzle is equipped with the branch material pipe.

Through adopting above-mentioned technical scheme, at first smash the slag through the sanding machine, make the slag become the graininess, then make the guide frame shake through vibrating motor, make the slag granule tiling on the guide frame, and drop from the lower one end of guide frame along the guide frame downstream gradually, blow the slag granule that drops from the guide frame through fan and duckbilled type air nozzle parallel, because copper metal particle's density is big, therefore the proportion is great, it is less to blow down the skew at the air current, other granules of slag and copper metal particle density difference are great, therefore the skew is great, thereby make copper metal particle and other slag fall into respectively in the branch material pipe of difference, the separation to the copper sediment has been realized.

Preferably, the top end of the material distributing pipe is provided with an air filtering screen plate, and the air filtering screen plate is arranged opposite to the duckbilled air nozzle.

Through adopting above-mentioned technical scheme, block on duckbilled type air nozzle relative position through the filter screen board, block the less slag of density, reduce that the slag skew angle that density is little, the quality is low too big and scatter outside the branch material pipe, influence production environment, the condition that needs the staff to clear up alone.

Preferably, the aluminum removing device comprises a spiral sand washer and an electric vortex aluminum separator.

Through adopting above-mentioned technical scheme, after removing the copper device and separating the copper metal, the material is transported to removing aluminium device department, because the slag has been processed into the graininess through the sanding device, when rethread eddy current selects the aluminium machine, sorting efficiency is higher, and the effect is better.

Preferably, screening device, breaker and deironing device all are equipped with multiunit of mutually supporting, each group the discharge gate of deironing device links to each other with the feed inlet of next group of screening device respectively, and a final group the discharge gate and the decoppering device of deironing device in screening device, breaker and the deironing device are connected

Through adopting above-mentioned technical scheme, through the setting of multiunit sieving mechanism, breaker and the deironing device of mutually supporting, carry out the breakage that relapse to the slag, and the deironing repeats, carries out repeated adsorption separation to the slag that the magnet adsorption effect is more weak in the slag, has promoted the separation effect to there is great piece slag in the slag, the possibility that produces the influence to follow-up separation effect.

Preferably, a sorting conveyor belt is arranged in front of the screening device, and the materials are conveyed to the screening device through the sorting conveyor belt.

Through adopting above-mentioned technical scheme, through setting up the material conveyer belt, the slag is placed on the conveyer belt after the screening for the first time, supplies to sort the bold metal through the people, has reduced the bold metal and has leaded to breaker and the dead possibility of sanding machine card, has promoted separation efficiency to the stability of production line continuous operation has been promoted.

Preferably, the deironing device includes the base station, be equipped with material conveyor belt on the base station, material conveyor belt length direction's both ends are feed inlet and discharge gate promptly as the deironing device, the base station is located the material conveyor belt top and is equipped with the pivot, be equipped with a plurality of magnetism in the pivot and inhale the unit, magnetism inhales the unit and includes that a plurality of cross-sections are sectorial electro-magnet, the electro-magnet is respectively in pivot fixed connection, and each the electro-magnet is along the circumference lateral wall evenly distributed of pivot, and is adjacent the filler block has set firmly between the tip that the pivot was kept away from to the electro-magnet, each electro-magnet and filler block constitute cylindrically.

Through adopting above-mentioned technical scheme, when the slag on the material conveyer belt is through the pivot below, the electro-magnet adsorbs the iron metal, the electro-magnet rotates along with the pivot simultaneously, transport the iron metal, iron metal when the electro-magnet moves to when separating the conveyer belt top, electro-magnet stop work, make magnetic force disappear, the iron metal falls on the material conveyer belt, separate and transport, the electro-magnet is switched on again and is produced magnetism when moving under the pivot, so reciprocal, adsorb and separate the metal on the material conveyer belt, separate adjacent electro-magnet through each filling block, cause the condition of influence to adjacent electro-magnet when reducing the magnetic pole magnetization of electro-magnet.

Preferably, a separation scraper is arranged above the separation conveyor belt on the base station, and one end of the separation scraper abuts against the end face of the electromagnet or the end face of the filling block far away from the rotating shaft.

Through adopting above-mentioned technical scheme, through setting up the separation scraper blade, will adhere to the iron metal of electro-magnet tip and scrape down, make it separate by force, reduced the iron metal and adhere to the possibility that causes the influence to the separation work.

Preferably, a brush is provided at a lower side of an end of the separation blade.

Through adopting above-mentioned technical scheme, through setting up the brush, further reduced the possibility that fine and close iron metal is attached to the electro-magnet surface.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after the garbage is sorted by the screening device, the garbage is sequentially treated by the iron removal device, the copper removal device and the aluminum removal device, so that the dependence on water in the process of separating and recycling metals is reduced, the condition of pollution to water resources is reduced, and the environmental protection performance is improved;

2. through the arrangement of the sand blasting machine and the vibration screening device, the slag crushed into particles is flatly laid on the guide frame, and the slag is screened through the airflow blown out by the fan, so that the screening of copper metal in a waterless environment is realized;

3. through having a plurality of electro-magnets around the deironing device that constitutes in the pivot, along with the rotation of pivot adsorb the separation to iron metal and other magnetizable metals, through the sieving mechanism, breaker and the deironing device separation back that the multiunit is mutually supported, promoted the effect to iron metal separation.

Drawings

FIG. 1 is a schematic diagram showing the overall structure of a production system for recovering metals from incineration slag of household garbage according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a structure for embodying a spray stirring device in an embodiment of the present application.

Fig. 3 is a schematic diagram for showing a structure of an iron removal device according to an embodiment of the present application.

Fig. 4 is an enlarged schematic view of a portion a of fig. 3.

FIG. 5 is a schematic diagram of a structure of a copper removal device according to an embodiment of the present application.

FIG. 6 is a schematic structural diagram for embodying a side view of a copper removing device in an embodiment of the present application.

Description of reference numerals: 1. a screening device; 2. a deironing device; 21. a base station; 22. a material conveyor belt; 24. a magnetic unit; 25. filling blocks; 26. separating the conveyor belt; 27. separating the scraper; 271. a brush; 3. a crushing device; 4. a copper removal device; 41. sanding machine; 42. shaking the screening device; 421. a base; 423. a guide frame; 424. a spring; 425. a vibration motor; 426. a fan; 427. duckbill air jets; 428. distributing pipes; 429. a wind filtering screen plate; 5. an aluminum removal device; 6. a spraying and stirring device; 61. a stirring tank; 62. a shower head; 7. and (5) sorting the conveyor belts.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a production system for recovering metal from household garbage incinerator slag. Referring to fig. 1, a production system for recovering metals from household garbage incinerator slag comprises a spraying stirring device 6, a plurality of screening devices 1, a plurality of iron removal devices 2 and a plurality of crushing devices 3, wherein one screening device 1, one iron removal device 2 and one crushing device 3 jointly form a group of iron removal systems. A copper removing device 4 is arranged behind the iron removing system, and an aluminum removing device 5 is arranged behind the copper removing device 4. After being taken out from the incinerator, the slag is firstly treated by the spraying and stirring device 6 and then sequentially passes through each group of iron removal systems. When slag passes through the iron removal system, the slag is firstly screened by the screening device 1, the screening device 1 separates coarse materials from fine materials, the fine materials directly pass through the iron removal device 2, the coarse materials pass through the iron removal device 2 after being crushed by the crushing device 3, the iron removal device 2 adsorbs and removes magnetic metal materials in the slag, and the remaining slag continues to pass through the next iron removal system, and the number of the iron removal systems is three. And when the slag passes through the last iron removal system, the slag sequentially passes through the copper removal device 4 and the aluminum removal device 5, and finally metal separation and recovery of the slag are completed.

Referring to fig. 2, spraying and stirring device 6 includes agitator tank 61, and agitator tank 61's top is provided with shower head 62, and shower head 62 and liquid reserve tank intercommunication to spray the bamboo charcoal deodorant in agitator tank 61 through the pump machine, and through agitator tank 61's stirring with bamboo charcoal deodorant and slag intensive mixing, then deodorize the slag, reduce the possibility that the peculiar smell gived off and influence operational environment air quality in the metal recovery working process.

Referring to fig. 1 and 2, screening device 1 selects for use the drum sieve, need not to add water as the carrier in the screening process, realizes the thickness separation of slag at the rolling in-process of drum sieve, and screening device 1's coarse fodder discharge gate department is equipped with letter sorting conveyer belt 7, and at the course in coarse fodder process through the coarse fodder area, the staff selects bold metal, separates bold metal from the slag, has reduced the possibility that causes the trouble among the subsequent handling process. The crushing device 3 is a crusher.

Referring to fig. 3 and 4, deironing device 2 includes base station 21, be equipped with material conveyer belt 22 on the base station 21, the link has set firmly on the base station 21, it is connected with the pivot to rotate on the link, and be equipped with drive pivot pivoted driving motor on the link, a plurality of magnetism of fixedly connected with inhale unit 24 on the circumference lateral wall of pivot, magnetism inhales unit 24 and includes electro-magnet and electromagnet control circuit, each electro-magnet all is fan-shapedly, and even distribution is on the circumference lateral wall of pivot, it has filling block 25 to fill between the adjacent electro-magnet, each filling block 25, each electro-magnet constitutes complete cylindrical jointly with the pivot. A separating conveying belt 26 is arranged above the conveying belt, when the electromagnet rotates to a position close to the conveying belt, the electromagnet starts to adsorb iron metal and other magnetizable metal in the slag, and when the electromagnet rotates to a position above the conveying belt under the driving of the rotating shaft, the electromagnet stops adsorbing work. Fixedly connected with separation scraper 27 on the structure frame of separation conveyer belt 26, separation scraper 27 one end supports tightly electro-magnet circumference lateral wall, and the bottom of separation scraper 27 is equipped with the brush 271 of contradicting with the electro-magnet.

Referring to fig. 5 and 6, the decoppering device 4 comprises a sand blasting machine 41 and a shaking screening device 42, wherein the shaking screening device 42 comprises a base 421, a plurality of springs 424 are fixedly arranged on the base 421, the top ends of the springs 424 are connected with a guide frame 423, one end of the guide frame 423 is located at the discharge port of the sand blasting machine 41, and the other end of the guide frame 423 inclines downwards. The vibrating motor 425 is arranged at the bottom of the guide frame 423 to enable the guide frame 423 to generate vibration, and after the sand blaster 41 crushes the slag into particles, the particles of the slag are flatly laid on the guide frame 423 under the vibration action of the guide frame 423 and fall off from the guide frame 423. The bottom of the guide frame 423 is provided with a fan 426, the output port of the fan 426 is provided with a duckbill air nozzle 427, and the duckbill air nozzle 427 is arranged in parallel to the width direction of the guide frame 423. A material distributing pipe 428 is arranged below the lower end of the guide frame 423 of the base 421, the material distributing pipe 428 is formed by adhering two flat square pipes together, one of the flat square pipes is close to the base 421, and the other flat square pipe is far away from the base 421. When the slag falls from the guide frame 423, the falling slag is blown by the air flow ejected from the duckbill air nozzles 427 to be deflected, the range of deflection occurring when the slag falls is small because the mass and inertia of the copper metal particles are large, and the angle of deflection occurring when the slag falls is large because the mass and inertia of other slag are small and the inertia of other slag is small, so that the slag finally falls into the two flat square tubes of the material distribution tube 428. Keep away from the flat square tube top mouth of pipe department fixedly connected with filter screen 429 of base 421, filter screen 429 sets up with duckbilled type air nozzle 427 is relative.

The electric vortex aluminum separator is used for the aluminum removing device 5, and after the sand blasting machine 41 crushes slag into particles, the electric vortex aluminum separator has higher aluminum separation efficiency and better separation effect. Slag between each device transports all transports through conveyor, and conveyor all chooses the conveyer belt for use.

The implementation principle of the production system for recovering metal from household garbage incineration slag in the embodiment of the application is as follows: the slag is screened by the screening device 1, the iron removal device 2 made of the conveyor belt and the electromagnets is arranged, water is not required to be added into the slag in the processing process, the dependence on water is reduced, and the possibility of water resource pollution is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. a production system for recovering metal from domestic waste incineration slag, is characterized in that: comprise screening device (1), the fine material discharge port of described screening device (1) is connected with iron removing device (2), so The coarse material discharge port of the screening device (1) is connected with the crushing device (3), the discharge port of the crushing device (3) is connected with the feed port of the iron removing device (2), and the iron removing device ( The discharge end of 2) is connected with a copper removal device (4), and the discharge port of the copper removal device (4) is provided with an aluminum removal device (5). The device (1) is connected with the crushing device (3), the iron removing device (2) and the copper removing device (4), and the copper removing device (4) and the aluminum removing device (5) are connected by a conveying device. (1) Use a trommel screen.

2. A production system for recovering metals from domestic waste incineration slag according to claim 1, wherein the slag first passes through the spraying and stirring device (6) before the first set of said screening devices (1) through which the slag passes. The spraying and stirring device (6) comprises a stirring tank (61), and a spraying head (62) is arranged on the stirring tank (61).

3. A production system for recovering metals from domestic waste incineration slag according to claim 2, wherein the copper removing device (4) comprises a sand blaster (41) and a shaking screening device (42), The shaking and screening device (42) comprises a base (421), a guide frame (423) is arranged on the base (421), and a spring (424) passes between the guide frame (423) and the base (421). ) are connected to each other, a vibration motor (425) is fixed on one side of the guide frame (423), the end of the guide frame (423) away from the sander (41) is inclined downward, and the base (421) A fan (426) is arranged at the bottom end of the guide frame (423), the output end of the fan (426) is provided with a duckbill-type air nozzle (427), and the duckbill-type air nozzle (427) is parallel to the guide The frame (423) is disposed away from the side wall of one end of the sanding machine (41), and the base (421) is provided with a material distribution pipe (428) below the duckbill-shaped air nozzle (427).

4. A production system for recovering metals from domestic waste incineration slag according to claim 3, characterized in that: the top of the material distribution pipe (428) is provided with an air filter screen plate (429), the air filter The screen plate (429) is arranged opposite to the duckbill air nozzle (427).

5 . The production system for recovering metals from domestic waste incineration slag according to claim 3 , wherein the aluminum removing device ( 5 ) comprises a spiral sand washer and an eddy current aluminum separator. 6 .

6. A production system for recovering metals from domestic waste incineration slag according to claim 1, characterized in that: the screening device (1), the crushing device (3) and the iron removal device (2) are all provided with There are multiple groups that cooperate with each other, the discharge ports of the iron removal devices (2) in each group are respectively connected with the feed ports of the next group of screening devices (1), and the last group of the screening devices (1), crushing devices ( 3) and the discharge port of the iron removing device (2) in the iron removing device (2) is connected with the copper removing device (4).

7. A production system for recovering metals from domestic waste incineration slag according to claim 6, characterized in that: a sorting conveyor belt (7) is provided before the screening device (1), and materials pass through the material conveyor belt (22) To the sorting conveyor (7).

8 . The production system for recovering metals from domestic waste incineration slag according to claim 1 , wherein the iron removing device ( 2 ) comprises a base ( 21 ) on which the base ( 21 ) is mounted. 9 . A material conveying belt (22) is provided, and both ends of the material conveying belt (22) in the longitudinal direction are the feeding port and the discharging port of the iron removing device (2), and the base (21) is located on the material conveying belt (22) A rotating shaft is arranged above, a plurality of magnetic attraction units (24) are arranged on the rotating shaft, and the magnetic attraction units (24) include a plurality of electromagnets with a sector-shaped cross section, the electromagnets are respectively fixedly connected to the rotating shaft, and each of the The electromagnets are evenly distributed along the circumferential side wall of the rotating shaft, and a filling block (25) is fixed between the adjacent electromagnets. 23) is provided with a separation conveyor belt (26) on one side.

9. A production system for recovering metals from domestic waste incineration slag according to claim 8, wherein a separation scraper (27) is provided on the base (21) above the separation conveyor (26). ), one end of the separating scraper (27) is pressed against the end face of the electromagnet or the end of the filling block (25) away from the rotating shaft (23).

10 . The production system for recovering metals from domestic waste incineration slag according to claim 9 , wherein a brush ( 271 ) is provided on the lower side of the end of the separation scraper ( 27 ). 11 .